67 		      const char *limit, int *shift)  in string_len()  argument
71 	while (dptr < limit && isalpha(*dptr)) {  in string_len()
79 		      const char *limit, int *shift)  in digits_len()  argument
82 	while (dptr < limit && isdigit(*dptr)) {  in digits_len()
100 static int word_len(const char *dptr, const char *limit)  in word_len()  argument
103 	while (dptr < limit && iswordc(*dptr)) {  in word_len()
111 		      const char *limit, int *shift)  in callid_len()  argument
115 	len = word_len(dptr, limit);  in callid_len()
117 	if (!len || dptr == limit || *dptr != '@')  in callid_len()
122 	domain_len = word_len(dptr, limit);  in callid_len()
130 		     const char *limit, int *shift)  in media_len()  argument
132 	int len = string_len(ct, dptr, limit, shift);  in media_len()
135 	if (dptr >= limit || *dptr != ' ')  in media_len()
140 	return len + digits_len(ct, dptr, limit, shift);  in media_len()
145 			  const char *limit, bool delim)  in sip_parse_addr()  argument
156 		ret = in4_pton(cp, limit - cp, (u8 *)&addr->ip, -1, &end);  in sip_parse_addr()
161 		if (cp < limit && *cp == '[')  in sip_parse_addr()
166 		ret = in6_pton(cp, limit - cp, (u8 *)&addr->ip6, -1, &end);  in sip_parse_addr()
170 		if (end < limit && *end == ']')  in sip_parse_addr()
186 		      const char *limit, int *shift)  in epaddr_len()  argument
191 	if (!sip_parse_addr(ct, dptr, &dptr, &addr, limit, true)) {  in epaddr_len()
199 		dptr += digits_len(ct, dptr, limit, shift);  in epaddr_len()
206 			  const char *limit, int *shift)  in skp_epaddr_len()  argument
214 	while (dptr < limit &&  in skp_epaddr_len()
220 	if (dptr < limit && *dptr == '@') {  in skp_epaddr_len()
228 	return epaddr_len(ct, dptr, limit, shift);  in skp_epaddr_len()
242 	const char *start = dptr, *limit = dptr + datalen, *end;  in ct_sip_parse_request()  local
248 	mlen = string_len(ct, dptr, limit, NULL);  in ct_sip_parse_request()
252 	if (++dptr >= limit)  in ct_sip_parse_request()
256 	for (; dptr < limit - strlen("sip:"); dptr++) {  in ct_sip_parse_request()
264 	if (!skp_epaddr_len(ct, dptr, limit, &shift))  in ct_sip_parse_request()
268 	if (!sip_parse_addr(ct, dptr, &end, addr, limit, true))  in ct_sip_parse_request()
270 	if (end < limit && *end == ':') {  in ct_sip_parse_request()
312 static const char *sip_follow_continuation(const char *dptr, const char *limit)  in sip_follow_continuation()  argument
315 	if (++dptr >= limit)  in sip_follow_continuation()
320 		if (++dptr >= limit)  in sip_follow_continuation()
329 	for (; dptr < limit; dptr++) {  in sip_follow_continuation()
336 static const char *sip_skip_whitespace(const char *dptr, const char *limit)  in sip_skip_whitespace()  argument
338 	for (; dptr < limit; dptr++) {  in sip_skip_whitespace()
343 		dptr = sip_follow_continuation(dptr, limit);  in sip_skip_whitespace()
350 static const char *ct_sip_header_search(const char *dptr, const char *limit,  in ct_sip_header_search()  argument
353 	for (limit -= len; dptr < limit; dptr++) {  in ct_sip_header_search()
355 			dptr = sip_follow_continuation(dptr, limit);  in ct_sip_header_search()
373 	const char *start = dptr, *limit = dptr + datalen;  in ct_sip_get_header()  local
376 	for (dptr += dataoff; dptr < limit; dptr++) {  in ct_sip_get_header()
380 		if (++dptr >= limit)  in ct_sip_get_header()
383 			if (++dptr >= limit)  in ct_sip_get_header()
393 		if (limit - dptr >= hdr->len &&  in ct_sip_get_header()
396 		else if (hdr->cname && limit - dptr >= hdr->clen + 1 &&  in ct_sip_get_header()
404 		dptr = sip_skip_whitespace(dptr, limit);  in ct_sip_get_header()
407 		if (*dptr != ':' || ++dptr >= limit)  in ct_sip_get_header()
411 		dptr = sip_skip_whitespace(dptr, limit);  in ct_sip_get_header()
417 			dptr = ct_sip_header_search(dptr, limit, hdr->search,  in ct_sip_get_header()
424 		*matchlen = hdr->match_len(ct, dptr, limit, &shift);  in ct_sip_get_header()
441 	const char *start = dptr, *limit = dptr + datalen;  in ct_sip_next_header()  local
446 	dptr = ct_sip_header_search(dptr, limit, ",", strlen(","));  in ct_sip_next_header()
450 	dptr = ct_sip_header_search(dptr, limit, hdr->search, hdr->slen);  in ct_sip_next_header()
456 	*matchlen = hdr->match_len(ct, dptr, limit, &shift);  in ct_sip_next_header()
511 	const char *c, *limit = dptr + datalen;  in ct_sip_parse_header_uri()  local
521 	if (!sip_parse_addr(ct, dptr + *matchoff, &c, addr, limit, true))  in ct_sip_parse_header_uri()
543 	const char *limit = dptr + datalen;  in ct_sip_parse_param()  local
547 	limit = ct_sip_header_search(dptr + dataoff, limit, ",", strlen(","));  in ct_sip_parse_param()
548 	if (!limit)  in ct_sip_parse_param()
549 		limit = dptr + datalen;  in ct_sip_parse_param()
551 	start = ct_sip_header_search(dptr + dataoff, limit, name, strlen(name));  in ct_sip_parse_param()
556 	end = ct_sip_header_search(start, limit, ";", strlen(";"));  in ct_sip_parse_param()
558 		end = limit;  in ct_sip_parse_param()
572 	const char *limit = dptr + datalen;  in ct_sip_parse_address_param()  local
575 	limit = ct_sip_header_search(dptr + dataoff, limit, ",", strlen(","));  in ct_sip_parse_address_param()
576 	if (!limit)  in ct_sip_parse_address_param()
577 		limit = dptr + datalen;  in ct_sip_parse_address_param()
579 	start = ct_sip_header_search(dptr + dataoff, limit, name, strlen(name));  in ct_sip_parse_address_param()
584 	if (!sip_parse_addr(ct, start, &end, addr, limit, delim))  in ct_sip_parse_address_param()
599 	const char *limit = dptr + datalen;  in ct_sip_parse_numerical_param()  local
603 	limit = ct_sip_header_search(dptr + dataoff, limit, ",", strlen(","));  in ct_sip_parse_numerical_param()
604 	if (!limit)  in ct_sip_parse_numerical_param()
605 		limit = dptr + datalen;  in ct_sip_parse_numerical_param()
607 	start = ct_sip_header_search(dptr + dataoff, limit, name, strlen(name));  in ct_sip_parse_numerical_param()
648 			  const char *limit)  in sdp_parse_addr()  argument
656 		ret = in4_pton(cp, limit - cp, (u8 *)&addr->ip, -1, &end);  in sdp_parse_addr()
659 		ret = in6_pton(cp, limit - cp, (u8 *)&addr->ip6, -1, &end);  in sdp_parse_addr()
674 			const char *limit, int *shift)  in sdp_addr_len()  argument
679 	if (!sdp_parse_addr(ct, dptr, &dptr, &addr, limit)) {  in sdp_addr_len()
711 static const char *ct_sdp_header_search(const char *dptr, const char *limit,  in ct_sdp_header_search()  argument
714 	for (limit -= len; dptr < limit; dptr++) {  in ct_sdp_header_search()
734 	const char *start = dptr, *limit = dptr + datalen;  in ct_sip_get_sdp_header()  local
741 	for (dptr += dataoff; dptr < limit; dptr++) {  in ct_sip_get_sdp_header()
745 		if (++dptr >= limit)  in ct_sip_get_sdp_header()
748 			if (++dptr >= limit)  in ct_sip_get_sdp_header()
753 		    limit - dptr >= thdr->len &&  in ct_sip_get_sdp_header()
756 		else if (limit - dptr >= hdr->len &&  in ct_sip_get_sdp_header()
764 			dptr = ct_sdp_header_search(dptr, limit, hdr->search,  in ct_sip_get_sdp_header()
771 		*matchlen = hdr->match_len(ct, dptr, limit, &shift);  in ct_sip_get_sdp_header()